I've searched all over the internet and cannot seem to factorise this polynomial. $x^4 - 2x^3 + 8x^2 - 14x + 7$ The result should be $(x − 1)(x^3 − x...

Given the following definition of topology, I am confused about the concept of "open sets". 2.2 Topological Space. We use some of the properties...

Good day, my family had a dinner discussion about polygons and how many sides a polygon has in relation to the angle measurement you'll get when you ...

I'm currently trying to go through Artin's Algebra textbook via a Harvard Extension Course (available on YouTube). I wanted to make sure that my...

I would like to express $\dfrac{\ln\left(\frac{1}{2}\right)}{80000000}$ as a negative exponent. Using Desmos online calculator I tried this variant: Why a...

I have been studying normal distribution and frequently I see that $$\Phi(1)=1-\Phi(-1)$$ where $\Phi(x)=\int_{-\infty}^{x}\phi(u)du$ is the cdf of a stan...

What is the meaning of "division sum". I have seen the being used a lot but haven't found an explanation defining the term. Understanding f...

The complex number $z$ is defined by $z=\frac{9\sqrt{3}+9i}{\sqrt{3}-i}$. Find the square roots of $z$, giving your answers in the form $re^{i\theta}$.whe...

I am confused why a "horizontal asymptote" that has been passed through by a graph can still be considered an asymptote? Can someone please explain this t...

We know the recurrence relation for normal merge sort. It is T(n) = 2T(n/2) + n. After solving it we can get T(n) = cnlogn. I would like to know the recur...